2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
25 osi_rwlock_t cm_volumeLock;
28 cm_ValidateVolume(void)
33 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
34 if ( volp->magic != CM_VOLUME_MAGIC ) {
35 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
36 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
39 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
40 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
41 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
44 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
45 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
46 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
49 if ( count != 0 && volp == cm_data.allVolumesp ||
50 count > cm_data.maxVolumes ) {
51 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
52 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
57 if ( count != cm_data.currentVolumes ) {
58 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
59 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
67 cm_ShutdownVolume(void)
71 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
73 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
74 if (volp->vol[volType].ID)
75 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
77 volp->cbExpiresRO = 0;
78 volp->cbServerpRO = NULL;
79 lock_FinalizeRWLock(&volp->rw);
85 void cm_InitVolume(int newFile, long maxVols)
87 static osi_once_t once;
89 if (osi_Once(&once)) {
90 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
93 cm_data.allVolumesp = NULL;
94 cm_data.currentVolumes = 0;
95 cm_data.maxVolumes = maxVols;
96 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
104 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
108 volp->flags |= CM_VOLUMEFLAG_RESET;
109 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
110 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
111 volp->vol[volType].state = vl_unknown;
112 volp->vol[volType].serversp = NULL;
113 if (volp->vol[volType].ID)
114 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
116 volp->cbExpiresRO = 0;
117 volp->cbServerpRO = NULL;
125 /* returns true if the id is a decimal integer, in which case we interpret it
126 * as an id. make the cache manager much simpler.
127 * Stolen from src/volser/vlprocs.c */
129 cm_VolNameIsID(char *aname)
132 while (tc = *aname++) {
133 if (tc > '9' || tc < '0')
141 * Update a volume. Caller holds a write lock on the volume (volp->rw).
144 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
145 * Yes, we support multihomed fileservers.
146 * Since before we got the code from IBM.
147 * But to find out about multiple addresses on a multihomed server, you need
148 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
149 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
150 * address per server.
151 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
152 * see src/afs/afs_volume.c, paying particular attention to
153 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
154 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
155 * thanks. The windows client calls the 0 versions.
156 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
158 * By not using the N versions, you only get up to 8 sites instead of 13.
159 * By not using the U versions, you don't get to know about multihomed serve
160 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
161 * Of course, you probably want to support the older versions for backward
162 * compatibility. If you do that, you need to call the newest interface
163 * first, and fall back to successively older versions if you get
167 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
173 cm_serverRef_t *tsrp;
175 struct sockaddr_in tsockAddr;
178 struct vldbentry vldbEntry;
179 struct nvldbentry nvldbEntry;
181 struct uvldbentry uvldbEntry;
186 enum volstatus rwNewstate = vl_online;
187 enum volstatus roNewstate = vl_online;
188 enum volstatus bkNewstate = vl_online;
189 #ifdef AFS_FREELANCE_CLIENT
194 lock_AssertWrite(&volp->rw);
197 * If the last volume update was in the last five
198 * minutes and it did not exist, then avoid the RPC
199 * and return No Such Volume immediately.
201 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
202 volp->lastUpdateTime + 600 < time(0))
204 return CM_ERROR_NOSUCHVOLUME;
207 #ifdef AFS_FREELANCE_CLIENT
208 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
211 memset(&vldbEntry, 0, sizeof(vldbEntry));
212 vldbEntry.flags |= VLF_RWEXISTS;
213 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
219 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
220 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
221 volp->cellp->name, volp->namep, volp->flags);
222 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
223 lock_ObtainWrite(&volp->rw);
224 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
225 volp->cellp->name, volp->namep, volp->flags);
226 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
227 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
228 volp->cellp->name, volp->namep, volp->flags);
229 osi_Wakeup((LONG_PTR) &volp->flags);
234 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
235 lock_ReleaseWrite(&volp->rw);
237 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
238 cm_UpdateCell(cellp, 0);
240 /* now we have volume structure locked and held; make RPC to fill it */
241 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
242 osi_LogSaveString(afsd_logp,volp->cellp->name),
243 osi_LogSaveString(afsd_logp,volp->namep));
245 struct rx_connection * rxconnp;
247 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
251 rxconnp = cm_GetRxConn(connp);
253 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
255 if ( code == RXGEN_OPCODE )
258 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
261 if ( code == RXGEN_OPCODE ) {
262 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
265 rx_PutConnection(rxconnp);
266 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
267 code = cm_MapVLRPCError(code, reqp);
269 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
270 osi_LogSaveString(afsd_logp,volp->cellp->name),
271 osi_LogSaveString(afsd_logp,volp->namep), code);
273 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
274 osi_LogSaveString(afsd_logp,volp->cellp->name),
275 osi_LogSaveString(afsd_logp,volp->namep));
278 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
279 * does not exist and is not a numeric string but there might exist a .readonly volume.
280 * If the base name doesn't exist we will not care about the .backup that might be left
281 * behind since there should be no method to access it.
283 if (code == CM_ERROR_NOSUCHVOLUME &&
284 _atoi64(volp->namep) == 0 &&
285 volp->vol[RWVOL].ID == 0 &&
286 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
287 char name[VL_MAXNAMELEN];
289 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
291 /* now we have volume structure locked and held; make RPC to fill it */
292 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
293 osi_LogSaveString(afsd_logp,volp->cellp->name),
294 osi_LogSaveString(afsd_logp,name));
296 struct rx_connection * rxconnp;
298 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
302 rxconnp = cm_GetRxConn(connp);
304 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
306 if ( code == RXGEN_OPCODE )
309 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
312 if ( code == RXGEN_OPCODE ) {
313 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
316 rx_PutConnection(rxconnp);
317 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
318 code = cm_MapVLRPCError(code, reqp);
320 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
321 osi_LogSaveString(afsd_logp,volp->cellp->name),
322 osi_LogSaveString(afsd_logp,name), code);
324 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
325 osi_LogSaveString(afsd_logp,volp->cellp->name),
326 osi_LogSaveString(afsd_logp,name));
329 lock_ObtainWrite(&volp->rw);
336 afs_int32 serverNumber[NMAXNSERVERS];
337 afs_int32 serverFlags[NMAXNSERVERS];
338 afsUUID serverUUID[NMAXNSERVERS];
339 afs_int32 rwServers_alldown = 1;
340 afs_int32 roServers_alldown = 1;
341 afs_int32 bkServers_alldown = 1;
342 char name[VL_MAXNAMELEN];
344 #ifdef AFS_FREELANCE_CLIENT
346 rwServers_alldown = 0;
349 /* clear out old bindings */
350 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
351 if (volp->vol[volType].serversp)
352 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
355 memset(serverUUID, 0, sizeof(serverUUID));
359 flags = vldbEntry.flags;
360 nServers = vldbEntry.nServers;
361 rwID = vldbEntry.volumeId[0];
362 roID = vldbEntry.volumeId[1];
363 bkID = vldbEntry.volumeId[2];
364 for ( i=0; i<nServers; i++ ) {
365 serverFlags[i] = vldbEntry.serverFlags[i];
366 serverNumber[i] = vldbEntry.serverNumber[i];
368 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
369 name[VL_MAXNAMELEN - 1] = '\0';
372 flags = nvldbEntry.flags;
373 nServers = nvldbEntry.nServers;
374 rwID = nvldbEntry.volumeId[0];
375 roID = nvldbEntry.volumeId[1];
376 bkID = nvldbEntry.volumeId[2];
377 for ( i=0; i<nServers; i++ ) {
378 serverFlags[i] = nvldbEntry.serverFlags[i];
379 serverNumber[i] = nvldbEntry.serverNumber[i];
381 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
382 name[VL_MAXNAMELEN - 1] = '\0';
386 flags = uvldbEntry.flags;
387 nServers = uvldbEntry.nServers;
388 rwID = uvldbEntry.volumeId[0];
389 roID = uvldbEntry.volumeId[1];
390 bkID = uvldbEntry.volumeId[2];
391 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
392 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
393 serverFlags[j] = uvldbEntry.serverFlags[i];
394 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
397 afs_uint32 * addrp, nentries, code, unique;
399 ListAddrByAttributes attrs;
402 memset(&attrs, 0, sizeof(attrs));
403 attrs.Mask = VLADDR_UUID;
404 attrs.uuid = uvldbEntry.serverNumber[i];
405 memset(&uuid, 0, sizeof(uuid));
406 memset(&addrs, 0, sizeof(addrs));
409 struct rx_connection *rxconnp;
411 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
415 rxconnp = cm_GetRxConn(connp);
416 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
417 rx_PutConnection(rxconnp);
418 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
421 code = cm_MapVLRPCError(code, reqp);
422 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
426 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
428 addrp = addrs.bulkaddrs_val;
429 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
430 serverFlags[j] = uvldbEntry.serverFlags[i];
431 serverNumber[j] = addrp[k];
432 serverUUID[j] = uuid;
435 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
438 code = CM_ERROR_INVAL;
441 nServers = j; /* update the server count */
442 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
443 name[VL_MAXNAMELEN - 1] = '\0';
448 /* decode the response */
449 lock_ObtainWrite(&cm_volumeLock);
450 if (cm_VolNameIsID(volp->namep)) {
455 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
456 name[len - 7] = '\0';
457 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
458 name[len - 9] = '\0';
461 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
462 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
464 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
465 cm_RemoveVolumeFromNameHashTable(volp);
467 strcpy(volp->namep, name);
469 cm_AddVolumeToNameHashTable(volp);
472 if (flags & VLF_DFSFILESET) {
473 volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
474 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
475 osi_LogSaveString(afsd_logp, volp->namep));
478 if (flags & VLF_RWEXISTS) {
479 if (volp->vol[RWVOL].ID != rwID) {
480 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
481 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
482 volp->vol[RWVOL].ID = rwID;
483 cm_AddVolumeToIDHashTable(volp, RWVOL);
486 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
487 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
488 volp->vol[RWVOL].ID = 0;
490 if (flags & VLF_ROEXISTS) {
491 if (volp->vol[ROVOL].ID != roID) {
492 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
493 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
494 volp->vol[ROVOL].ID = roID;
495 cm_AddVolumeToIDHashTable(volp, ROVOL);
498 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
499 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
500 volp->vol[ROVOL].ID = 0;
502 if (flags & VLF_BACKEXISTS) {
503 if (volp->vol[BACKVOL].ID != bkID) {
504 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
505 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
506 volp->vol[BACKVOL].ID = bkID;
507 cm_AddVolumeToIDHashTable(volp, BACKVOL);
510 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
511 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
512 volp->vol[BACKVOL].ID = 0;
514 lock_ReleaseWrite(&cm_volumeLock);
515 for (i=0; i<nServers; i++) {
516 /* create a server entry */
517 tflags = serverFlags[i];
518 if (tflags & VLSF_DONTUSE)
520 tsockAddr.sin_port = htons(7000);
521 tsockAddr.sin_family = AF_INET;
522 tempAddr = htonl(serverNumber[i]);
523 tsockAddr.sin_addr.s_addr = tempAddr;
524 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
525 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
527 * Check to see if the uuid of the server we know at this address
528 * matches the uuid of the server we are being told about by the
529 * vlserver. If not, ...?
531 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
532 char uuid1[128], uuid2[128];
535 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
536 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
537 afs_inet_ntoa_r(serverNumber[i], hoststr);
539 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
540 osi_LogSaveString(afsd_logp, uuid1),
541 osi_LogSaveString(afsd_logp, uuid2),
542 osi_LogSaveString(afsd_logp, hoststr));
547 * cm_NewServer will probe the file server which in turn will
548 * update the state on the volume group object
550 lock_ReleaseWrite(&volp->rw);
551 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
552 lock_ObtainWrite(&volp->rw);
554 osi_assertx(tsp != NULL, "null cm_server_t");
557 * if this server was created by fs setserverprefs
558 * then it won't have either a cell assignment or
563 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
564 !afs_uuid_is_nil(&serverUUID[i])) {
565 tsp->uuid = serverUUID[i];
566 tsp->flags |= CM_SERVERFLAG_UUID;
569 /* and add it to the list(s). */
571 * Each call to cm_NewServerRef() increments the
572 * ref count of tsp. These reference will be dropped,
573 * if and when the volume is reset; see reset code
574 * earlier in this function.
576 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
577 tsrp = cm_NewServerRef(tsp, rwID);
578 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
580 lock_ObtainWrite(&cm_serverLock);
581 tsrp->refCount--; /* drop allocation reference */
582 lock_ReleaseWrite(&cm_serverLock);
584 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
585 rwServers_alldown = 0;
587 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
588 tsrp = cm_NewServerRef(tsp, roID);
589 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
590 lock_ObtainWrite(&cm_serverLock);
591 tsrp->refCount--; /* drop allocation reference */
592 lock_ReleaseWrite(&cm_serverLock);
595 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
596 roServers_alldown = 0;
598 /* We don't use VLSF_BACKVOL !?! */
599 /* Because only the backup on the server holding the RW
600 * volume can be valid. This check prevents errors if a
601 * RW is moved but the old backup is not removed.
603 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
604 tsrp = cm_NewServerRef(tsp, bkID);
605 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
606 lock_ObtainWrite(&cm_serverLock);
607 tsrp->refCount--; /* drop allocation reference */
608 lock_ReleaseWrite(&cm_serverLock);
610 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
611 bkServers_alldown = 0;
613 /* Drop the reference obtained by cm_FindServer() */
620 * If the first n servers have the same ipRank, then we
621 * randomly pick one among them and move it to the beginning.
622 * We don't bother to re-order the whole list because
623 * the rest of the list is used only if the first server is
624 * down. We only do this for the RO list; we assume the other
625 * lists are length 1.
628 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
631 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
632 roNewstate = roServers_alldown ? vl_alldown : vl_online;
633 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
635 volp->flags &= ~CM_VOLUMEFLAG_NOEXIST;
636 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
637 volp->flags |= CM_VOLUMEFLAG_NOEXIST;
639 rwNewstate = roNewstate = bkNewstate = vl_alldown;
642 if (volp->vol[RWVOL].state != rwNewstate) {
643 if (volp->vol[RWVOL].ID)
644 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
645 volp->vol[RWVOL].state = rwNewstate;
647 if (volp->vol[ROVOL].state != roNewstate) {
648 if (volp->vol[ROVOL].ID)
649 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
650 volp->vol[ROVOL].state = roNewstate;
652 if (volp->vol[BACKVOL].state != bkNewstate) {
653 if (volp->vol[BACKVOL].ID)
654 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
655 volp->vol[BACKVOL].state = bkNewstate;
658 volp->lastUpdateTime = time(0);
661 volp->flags &= ~CM_VOLUMEFLAG_RESET;
663 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
664 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
665 osi_LogSaveString(afsd_logp,volp->cellp->name),
666 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
667 osi_Wakeup((LONG_PTR) &volp->flags);
672 /* Requires read or write lock on cm_volumeLock */
673 void cm_GetVolume(cm_volume_t *volp)
675 InterlockedIncrement(&volp->refCount);
678 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
683 lock_ObtainRead(&cm_volumeLock);
684 hash = CM_VOLUME_ID_HASH(fidp->volume);
685 /* The volumeID can be any one of the three types. So we must
686 * search the hash table for all three types until we find it.
687 * We will search in the order of RO, RW, BK.
689 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
690 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
695 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
696 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
702 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
703 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
708 /* hold the volume if we found it */
712 lock_ReleaseRead(&cm_volumeLock);
716 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
717 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
720 #ifdef SEARCH_ALL_VOLUMES
723 char volNameString[VL_MAXNAMELEN];
727 lock_ObtainRead(&cm_volumeLock);
728 #ifdef SEARCH_ALL_VOLUMES
729 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
730 if (cellp == volp->cellp &&
731 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
732 (unsigned) volumeID == volp->vol[ROVOL].ID ||
733 (unsigned) volumeID == volp->vol[BACKVOL].ID))
738 #endif /* SEARCH_ALL_VOLUMES */
740 hash = CM_VOLUME_ID_HASH(volumeID);
741 /* The volumeID can be any one of the three types. So we must
742 * search the hash table for all three types until we find it.
743 * We will search in the order of RO, RW, BK.
745 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
746 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
751 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
752 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
758 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
759 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
764 #ifdef SEARCH_ALL_VOLUMES
765 osi_assertx(volp == volp2, "unexpected cm_vol_t");
768 /* hold the volume if we found it */
772 lock_ReleaseRead(&cm_volumeLock);
776 lock_ObtainWrite(&volp->rw);
779 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
780 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
782 lock_ReleaseWrite(&volp->rw);
786 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
787 lock_ObtainWrite(&cm_volumeLock);
788 cm_AdjustVolumeLRU(volp);
789 lock_ReleaseWrite(&cm_volumeLock);
792 lock_ObtainRead(&cm_volumeLock);
794 lock_ReleaseRead(&cm_volumeLock);
799 /* otherwise, we didn't find it so consult the VLDB */
800 sprintf(volNameString, "%u", volumeID);
801 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
802 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
804 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
805 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
806 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
809 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
810 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
817 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
818 struct cm_user *userp, struct cm_req *reqp,
819 afs_uint32 flags, cm_volume_t **outVolpp)
822 #ifdef SEARCH_ALL_VOLUMES
826 char name[VL_MAXNAMELEN];
831 strncpy(name, volumeNamep, VL_MAXNAMELEN);
832 name[VL_MAXNAMELEN-1] = '\0';
835 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
837 name[len - 7] = '\0';
838 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
840 name[len - 9] = '\0';
845 lock_ObtainRead(&cm_volumeLock);
846 #ifdef SEARCH_ALL_VOLUMES
847 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
848 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
853 #endif /* SEARCH_ALL_VOLUMES */
855 hash = CM_VOLUME_NAME_HASH(name);
856 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
857 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
861 #ifdef SEARCH_ALL_VOLUMES
862 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
865 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
867 /* otherwise, get from VLDB */
870 * Change to a write lock so that we have exclusive use of
871 * the first cm_volume_t with a refCount of 0 so that we
872 * have time to increment it.
874 lock_ConvertRToW(&cm_volumeLock);
876 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
877 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
878 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
879 if ( volp->refCount == 0 ) {
880 /* There is one we can re-use */
885 for ( volp = cm_data.volumeLRULastp;
887 volp = (cm_volume_t *) osi_QPrev(&volp->q))
889 if ( volp->refCount == 0 ) {
890 /* There is one we can re-use */
896 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
898 InterlockedIncrement(&volp->refCount);
899 lock_ReleaseWrite(&cm_volumeLock);
900 lock_ObtainWrite(&volp->rw);
901 lock_ObtainWrite(&cm_volumeLock);
903 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
904 volp->cellp->name, volp->namep);
906 /* The volp is removed from the LRU queue in order to
907 * prevent two threads from attempting to recycle the
908 * same object. This volp must be re-inserted back into
909 * the LRU queue before this function exits.
911 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
912 cm_RemoveVolumeFromLRU(volp);
913 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
914 cm_RemoveVolumeFromNameHashTable(volp);
916 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
917 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
918 cm_RemoveVolumeFromIDHashTable(volp, volType);
919 if (volp->vol[volType].ID)
920 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
921 volp->vol[volType].ID = 0;
922 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
923 lock_ReleaseWrite(&cm_volumeLock);
924 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
925 lock_ObtainWrite(&cm_volumeLock);
928 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
929 memset(volp, 0, sizeof(cm_volume_t));
930 volp->magic = CM_VOLUME_MAGIC;
931 volp->allNextp = cm_data.allVolumesp;
932 cm_data.allVolumesp = volp;
933 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
934 lock_ReleaseWrite(&cm_volumeLock);
935 lock_ObtainWrite(&volp->rw);
936 lock_ObtainWrite(&cm_volumeLock);
937 volp->refCount = 1; /* starts off held */
940 strncpy(volp->namep, name, VL_MAXNAMELEN);
941 volp->namep[VL_MAXNAMELEN-1] = '\0';
942 volp->flags = CM_VOLUMEFLAG_RESET;
944 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
945 volp->vol[volType].state = vl_unknown;
946 volp->vol[volType].nextp = NULL;
947 volp->vol[volType].flags = 0;
949 volp->cbExpiresRO = 0;
950 volp->cbServerpRO = NULL;
951 volp->creationDateRO = 0;
952 cm_AddVolumeToNameHashTable(volp);
953 lock_ReleaseWrite(&cm_volumeLock);
958 lock_ReleaseRead(&cm_volumeLock);
961 return CM_ERROR_NOSUCHVOLUME;
963 lock_ObtainWrite(&volp->rw);
966 /* if we get here we are holding the mutex */
967 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
968 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
970 lock_ReleaseWrite(&volp->rw);
972 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
973 type == ROVOL && volp->vol[ROVOL].ID == 0))
974 code = CM_ERROR_NOSUCHVOLUME;
979 lock_ObtainWrite(&cm_volumeLock);
980 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
981 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
982 cm_AdjustVolumeLRU(volp);
983 lock_ReleaseWrite(&cm_volumeLock);
986 * do not return it to the caller but do insert it in the LRU
987 * otherwise it will be lost
989 lock_ObtainWrite(&cm_volumeLock);
990 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
991 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
992 cm_AdjustVolumeLRU(volp);
994 lock_ReleaseWrite(&cm_volumeLock);
997 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
998 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
999 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1002 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1003 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1010 * Only call this function in response to a VNOVOL or VMOVED error
1011 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1012 * as that can lead to recursive calls.
1014 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1018 #ifdef SEARCH_ALL_VOLUMES
1025 return CM_ERROR_INVAL;
1027 cellp = cm_FindCellByID(fidp->cell, 0);
1029 return CM_ERROR_NOSUCHCELL;
1031 /* search for the volume */
1032 lock_ObtainRead(&cm_volumeLock);
1033 #ifdef SEARCH_ALL_VOLUMES
1034 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1035 if (cellp == volp->cellp &&
1036 (fidp->volume == volp->vol[RWVOL].ID ||
1037 fidp->volume == volp->vol[ROVOL].ID ||
1038 fidp->volume == volp->vol[BACKVOL].ID))
1041 #endif /* SEARCH_ALL_VOLUMES */
1043 hash = CM_VOLUME_ID_HASH(fidp->volume);
1044 /* The volumeID can be any one of the three types. So we must
1045 * search the hash table for all three types until we find it.
1046 * We will search in the order of RO, RW, BK.
1048 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1049 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1053 /* try RW volumes */
1054 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1055 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1060 /* try BK volumes */
1061 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1062 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1067 #ifdef SEARCH_ALL_VOLUMES
1068 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1070 /* hold the volume if we found it */
1074 lock_ReleaseRead(&cm_volumeLock);
1077 return CM_ERROR_NOSUCHVOLUME;
1080 cm_data.mountRootGen = time(NULL);
1081 lock_ObtainWrite(&volp->rw);
1082 volp->flags |= CM_VOLUMEFLAG_RESET;
1084 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1085 lock_ReleaseWrite(&volp->rw);
1087 lock_ObtainRead(&cm_volumeLock);
1089 lock_ReleaseRead(&cm_volumeLock);
1094 /* find the appropriate servers from a volume */
1095 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1097 cm_serverRef_t **serverspp;
1098 cm_serverRef_t *current;
1102 lock_ObtainWrite(&cm_serverLock);
1104 if (volume == volp->vol[RWVOL].ID)
1105 serverspp = &volp->vol[RWVOL].serversp;
1106 else if (volume == volp->vol[ROVOL].ID)
1107 serverspp = &volp->vol[ROVOL].serversp;
1108 else if (volume == volp->vol[BACKVOL].ID)
1109 serverspp = &volp->vol[BACKVOL].serversp;
1111 lock_ReleaseWrite(&cm_serverLock);
1115 lock_ObtainWrite(&volp->rw);
1116 volp->flags |= CM_VOLUMEFLAG_RESET;
1117 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1118 lock_ReleaseWrite(&volp->rw);
1126 * Increment the refCount on deleted items as well.
1127 * They will be freed by cm_FreeServerList when they get to zero
1129 for (current = *serverspp; current; current = current->next)
1130 current->refCount++;
1132 lock_ReleaseWrite(&cm_serverLock);
1137 void cm_PutVolume(cm_volume_t *volp)
1139 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1140 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1143 /* return the read-only volume, if there is one, or the read-write volume if
1146 long cm_GetROVolumeID(cm_volume_t *volp)
1150 lock_ObtainRead(&volp->rw);
1151 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1152 id = volp->vol[ROVOL].ID;
1154 id = volp->vol[RWVOL].ID;
1155 lock_ReleaseRead(&volp->rw);
1160 void cm_RefreshVolumes(int lifetime)
1168 /* force mount point target updates */
1169 if (cm_data.mountRootGen + lifetime <= now)
1170 cm_data.mountRootGen = now;
1173 * force a re-loading of volume data from the vldb
1174 * if the lifetime for the cached data has expired
1176 lock_ObtainRead(&cm_volumeLock);
1177 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1178 InterlockedIncrement(&volp->refCount);
1179 lock_ReleaseRead(&cm_volumeLock);
1181 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1182 lock_ObtainWrite(&volp->rw);
1183 if (volp->lastUpdateTime + lifetime <= now)
1184 volp->flags |= CM_VOLUMEFLAG_RESET;
1185 lock_ReleaseWrite(&volp->rw);
1188 lock_ObtainRead(&cm_volumeLock);
1189 refCount = InterlockedDecrement(&volp->refCount);
1190 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1192 lock_ReleaseRead(&cm_volumeLock);
1196 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1197 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1201 AFSFetchVolumeStatus volStat;
1206 struct rx_connection * rxconnp;
1208 char offLineMsg[256];
1210 long alldown, alldeleted;
1211 cm_serverRef_t *serversp;
1215 OfflineMsg = offLineMsg;
1218 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1219 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1220 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1222 if (!statep->serversp && !(*volumeUpdatedp)) {
1224 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1225 *volumeUpdatedp = 1;
1228 if (statep->serversp) {
1231 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1232 if (serversp->status == srv_deleted)
1239 if (serversp->status == srv_busy || serversp->status == srv_offline)
1240 serversp->status = srv_not_busy;
1243 if (alldeleted && !(*volumeUpdatedp)) {
1245 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1246 *volumeUpdatedp = 1;
1249 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1250 (!alldown && statep->state == vl_alldown)) {
1253 lock_ReleaseWrite(&volp->rw);
1255 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1259 rxconnp = cm_GetRxConn(connp);
1260 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1261 &volStat, &Name, &OfflineMsg, &MOTD);
1262 rx_PutConnection(rxconnp);
1263 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, NULL, NULL, NULL, code));
1264 code = cm_MapRPCError(code, &req);
1266 lock_ObtainWrite(&volp->rw);
1267 if (code == 0 && volStat.Online) {
1268 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1269 statep->state = vl_online;
1271 } else if (code == CM_ERROR_NOACCESS) {
1272 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1273 statep->state = vl_unknown;
1276 } else if (alldown && statep->state != vl_alldown) {
1277 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1278 statep->state = vl_alldown;
1280 } else if (statep->state != vl_alldown) {
1281 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1282 statep->state = vl_alldown;
1287 /* The return code is 0 if the volume is not online and
1288 * 1 if the volume is online
1291 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1295 afs_uint32 online = 0;
1296 afs_uint32 volumeUpdated = 0;
1298 lock_ObtainWrite(&volp->rw);
1300 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1302 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1306 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1307 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1308 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1310 lock_ReleaseWrite(&volp->rw);
1316 * called from the Daemon thread.
1317 * when checking the offline status, check those of the most recently used volumes first.
1319 void cm_CheckOfflineVolumes(void)
1323 extern int daemon_ShutdownFlag;
1324 extern int powerStateSuspended;
1326 lock_ObtainRead(&cm_volumeLock);
1327 for (volp = cm_data.volumeLRULastp;
1328 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1329 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1330 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1331 InterlockedIncrement(&volp->refCount);
1332 lock_ReleaseRead(&cm_volumeLock);
1333 cm_CheckOfflineVolume(volp, 0);
1334 lock_ObtainRead(&cm_volumeLock);
1335 refCount = InterlockedDecrement(&volp->refCount);
1336 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1339 lock_ReleaseRead(&cm_volumeLock);
1344 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1346 enum volstatus newStatus;
1347 cm_serverRef_t *tsrp;
1349 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1352 if (!volp || !statep) {
1359 lock_ObtainWrite(&cm_serverLock);
1360 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1362 sprintf(addr, "%d.%d.%d.%d",
1363 ((tsp->addr.sin_addr.s_addr & 0xff)),
1364 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1365 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1366 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1368 if (tsrp->status == srv_deleted) {
1369 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1370 statep->ID, osi_LogSaveString(afsd_logp,addr));
1374 cm_GetServerNoLock(tsp);
1375 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1377 if (tsrp->status == srv_busy) {
1378 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1379 statep->ID, osi_LogSaveString(afsd_logp,addr));
1382 } else if (tsrp->status == srv_offline) {
1383 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1384 statep->ID, osi_LogSaveString(afsd_logp,addr));
1388 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1389 statep->ID, osi_LogSaveString(afsd_logp,addr));
1394 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1395 statep->ID, osi_LogSaveString(afsd_logp,addr));
1397 cm_PutServerNoLock(tsp);
1400 lock_ReleaseWrite(&cm_serverLock);
1402 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1403 allDown, allBusy, someBusy, someOffline, allOffline);
1406 newStatus = vl_alldown;
1407 else if (allBusy || (someBusy && someOffline))
1408 newStatus = vl_busy;
1409 else if (allOffline)
1410 newStatus = vl_offline;
1412 newStatus = vl_online;
1414 if (statep->ID && statep->state != newStatus)
1415 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1417 statep->state = newStatus;
1421 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1424 if (volp->vol[RWVOL].ID == volID) {
1425 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1426 } else if (volp->vol[ROVOL].ID == volID) {
1427 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1428 } else if (volp->vol[BACKVOL].ID == volID) {
1429 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1432 * If we are called with volID == 0 then something has gone wrong.
1433 * Most likely a race occurred in the server volume list maintenance.
1434 * Since we don't know which volume's status should be updated,
1435 * just update all of them that are known to exist. Better to be
1436 * correct than fast.
1439 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1440 if (volp->vol[volType].ID != 0)
1441 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1447 ** Finds all volumes that reside on this server and reorders their
1448 ** RO list according to the changed rank of server.
1450 void cm_ChangeRankVolume(cm_server_t *tsp)
1456 /* find volumes which might have RO copy on server*/
1457 lock_ObtainRead(&cm_volumeLock);
1458 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1460 code = 1 ; /* assume that list is unchanged */
1461 InterlockedIncrement(&volp->refCount);
1462 lock_ReleaseRead(&cm_volumeLock);
1463 lock_ObtainWrite(&volp->rw);
1465 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1466 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1468 /* this volume list was changed */
1470 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1472 lock_ReleaseWrite(&volp->rw);
1473 lock_ObtainRead(&cm_volumeLock);
1474 refCount = InterlockedDecrement(&volp->refCount);
1475 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1477 lock_ReleaseRead(&cm_volumeLock);
1480 /* dump all volumes that have reference count > 0 to a file.
1481 * cookie is used to identify this batch for easy parsing,
1482 * and it a string provided by a caller
1484 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1491 lock_ObtainRead(&cm_scacheLock);
1492 lock_ObtainRead(&cm_volumeLock);
1495 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1496 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1497 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1499 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1502 char *srvStr = NULL;
1503 afs_uint32 srvStrRpc = TRUE;
1507 if (volp->cbServerpRO) {
1508 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1509 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1510 afs_asprintf(&srvStr, "%.0I", volp->cbServerpRO->addr.sin_addr.s_addr);
1514 if (volp->cbExpiresRO) {
1515 t = volp->cbExpiresRO;
1519 cbt[strlen(cbt)-1] = '\0';
1522 if (volp->creationDateRO) {
1523 t = volp->creationDateRO;
1526 cdrot = strdup(cdrot);
1527 cdrot[strlen(cdrot)-1] = '\0';
1532 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1533 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1534 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1535 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1536 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1538 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1542 RpcStringFree(&srvStr);
1551 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1552 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1555 lock_ReleaseRead(&cm_volumeLock);
1556 lock_ReleaseRead(&cm_scacheLock);
1563 * String hash function used by SDBM project.
1564 * It was chosen because it is fast and provides
1567 afs_uint32 SDBMHash(const char * str)
1569 afs_uint32 hash = 0;
1575 for(i = 0, len = strlen(str); i < len; i++)
1577 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1580 return (hash & 0x7FFFFFFF);
1583 /* call with volume write-locked and mutex held */
1584 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1588 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1591 i = CM_VOLUME_NAME_HASH(volp->namep);
1593 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1594 cm_data.volumeNameHashTablep[i] = volp;
1595 volp->qflags |= CM_VOLUME_QFLAG_IN_HASH;
1598 /* call with volume write-locked and mutex held */
1599 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1601 cm_volume_t **lvolpp;
1605 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1606 /* hash it out first */
1607 i = CM_VOLUME_NAME_HASH(volp->namep);
1608 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1610 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1611 if (tvolp == volp) {
1612 *lvolpp = volp->nameNextp;
1613 volp->qflags &= ~CM_VOLUME_QFLAG_IN_HASH;
1614 volp->nameNextp = NULL;
1621 /* call with volume write-locked and mutex held */
1622 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1625 struct cm_vol_state * statep;
1627 statep = cm_VolumeStateByType(volp, volType);
1629 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1632 i = CM_VOLUME_ID_HASH(statep->ID);
1636 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1637 cm_data.volumeRWIDHashTablep[i] = volp;
1640 statep->nextp = cm_data.volumeROIDHashTablep[i];
1641 cm_data.volumeROIDHashTablep[i] = volp;
1644 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1645 cm_data.volumeBKIDHashTablep[i] = volp;
1648 statep->qflags |= CM_VOLUME_QFLAG_IN_HASH;
1652 /* call with volume write-locked and mutex held */
1653 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1655 cm_volume_t **lvolpp;
1657 struct cm_vol_state * statep;
1660 statep = cm_VolumeStateByType(volp, volType);
1662 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1663 /* hash it out first */
1664 i = CM_VOLUME_ID_HASH(statep->ID);
1668 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1669 tvolp = cm_data.volumeRWIDHashTablep[i];
1672 lvolpp = &cm_data.volumeROIDHashTablep[i];
1673 tvolp = cm_data.volumeROIDHashTablep[i];
1676 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1677 tvolp = cm_data.volumeBKIDHashTablep[i];
1680 osi_assertx(0, "invalid volume type");
1683 if (tvolp == volp) {
1684 *lvolpp = statep->nextp;
1685 statep->qflags &= ~CM_VOLUME_QFLAG_IN_HASH;
1686 statep->nextp = NULL;
1690 lvolpp = &tvolp->vol[volType].nextp;
1691 tvolp = tvolp->vol[volType].nextp;
1696 /* must be called with cm_volumeLock write-locked! */
1697 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1699 lock_AssertWrite(&cm_volumeLock);
1701 if (volp == cm_data.volumeLRUFirstp)
1704 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1705 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1706 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1707 volp->qflags |= CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1709 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1712 /* must be called with cm_volumeLock write-locked! */
1713 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1715 lock_AssertWrite(&cm_volumeLock);
1717 if (volp == cm_data.volumeLRULastp)
1720 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1721 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1722 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1723 volp->qflags |= CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1725 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1728 /* must be called with cm_volumeLock write-locked! */
1729 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1731 lock_AssertWrite(&cm_volumeLock);
1733 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1734 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1735 volp->qflags &= ~CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1738 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1741 static char * volstatus_str(enum volstatus vs)
1757 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1759 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1762 if (volID == volp->vol[RWVOL].ID)
1764 else if (volID == volp->vol[ROVOL].ID)
1766 else if (volID == volp->vol[BACKVOL].ID)
1770 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1772 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1773 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1775 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1778 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1780 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1782 return statep->state;
1787 /* Renew .readonly volume callbacks that are more than
1788 * 30 minutes old. (A volume callback is issued for 2 hours.)
1791 cm_VolumeRenewROCallbacks(void)
1794 time_t minexp = time(NULL) + 90 * 60;
1795 extern int daemon_ShutdownFlag;
1796 extern int powerStateSuspended;
1798 lock_ObtainRead(&cm_volumeLock);
1799 for (volp = cm_data.allVolumesp;
1800 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1801 volp=volp->allNextp) {
1802 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1807 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1811 lock_ReleaseRead(&cm_volumeLock);
1812 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1813 lock_ObtainWrite(&scp->rw);
1814 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1815 lock_ReleaseWrite(&scp->rw);
1816 cm_ReleaseSCache(scp);
1818 lock_ObtainRead(&cm_volumeLock);
1821 lock_ReleaseRead(&cm_volumeLock);
1825 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1827 return &volp->vol[volType];
1831 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1833 cm_vol_state_t * statep = NULL;
1835 if (id == volp->vol[RWVOL].ID)
1836 statep = &volp->vol[RWVOL];
1837 else if (id == volp->vol[ROVOL].ID)
1838 statep = &volp->vol[ROVOL];
1839 else if (id == volp->vol[BACKVOL].ID)
1840 statep = &volp->vol[BACKVOL];
1846 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1848 size_t len = strlen(volname);
1849 cm_vol_state_t *statep;
1851 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1852 statep = &volp->vol[ROVOL];
1853 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1854 statep = &volp->vol[BACKVOL];
1856 statep = &volp->vol[RWVOL];
1862 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1864 if (id == volp->vol[RWVOL].ID)
1866 else if (id == volp->vol[ROVOL].ID)
1868 else if (id == volp->vol[BACKVOL].ID)